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  • EN 60068-2-20:2008

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Environmental testing - Part 2-20: Tests - Test T: Test methods for solderability and resistance to soldering heat of devices with leads

    Available format(s): 

    Superseded date:  13-05-2021

    Language(s): 

    Published date:  25-09-2008

    Publisher:  European Committee for Standards - Electrical

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    1 Scope and object
    2 Normative references
    3 Terms and definitions
    4 Test Ta: Solderability of wire and tag terminations
      4.1 Object and general description of the test
          4.1.1 Test methods
          4.1.2 Specimen preparation
          4.1.3 Initial measurements
          4.1.4 Accelerated ageing
      4.2 Method 1: Solder bath
          4.2.1 Description of the solder bath
          4.2.2 Flux
          4.2.3 Procedure
          4.2.4 Test conditions
          4.2.5 Final measurements and requirements
      4.3 Method 2: Soldering iron at 350 degrees C
          4.3.1 Description of soldering irons
          4.3.2 Solder and flux
          4.3.3 Procedure
          4.3.4 Final measurements and requirements
      4.4 Information to be given in the relevant specification
    5 Test Tb: Resistance to soldering heat
      5.1 Object and general description of the test
          5.1.1 Test methods
          5.1.2 Initial measurements
      5.2 Method 1: Solder bath
          5.2.1 Description of the solder bath
          5.2.2 Flux
          5.2.3 Procedure
          5.2.4 Test conditions
          5.2.5 De-wetting
      5.3 Method 2: Soldering iron
          5.3.1 Description of soldering iron
          5.3.2 Solder and flux
          5.3.3 Procedure
      5.4 Recovery
      5.5 Final measurements and requirements
      5.6 De-wetting (if applicable)
      5.7 Information to be given in the relevant specification
    Annex A (informative) Example of apparatus for accelerated
            steam ageing process
    Annex B (normative) Specification for flux constituents
    Annex ZA (normative) Normative references to international
             publications with their corresponding European
             publications
    Bibliography

    Abstract - (Show below) - (Hide below)

    IEC 60068-2-20:2008(E) outlines Test T, applicable to devices with leads. Soldering tests for surface mounting devices (SMD) are described in IEC 60068-2-58. This standard provides procedures for determining the solderability and resistance to soldering heat of devices in applications using solder alloys, which are eutectic or near eutectic tin lead (Pb), or lead-free alloys. The procedures in this standard include the solder bath method and soldering iron method. The objective of this standard is to ensure that component lead or termination solderability meets the applicable solder joint requirements of IEC 61191-3 and IEC 61191-4. In addition, test methods are provided to ensure that the component body can resist against the heat load to which it is exposed during soldering. The major technical changes with regard to the fourth edition are the following: - the solder globule test is deleted; - test conditions and requirements for lead-free solders are added.

    General Product Information - (Show below) - (Hide below)

    Committee CLC/SR 91
    Development Note Supersedes HD 323.2.20. (10/2008) Supersedes UNE 20501-2-20. (01/2012)
    Document Type Standard
    Publisher European Committee for Standards - Electrical
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

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    I.S. EN 60115-8-1:2015 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8-1: BLANK DETAIL SPECIFICATION: FIXED SURFACE MOUNT (SMD) LOW POWER FILM RESISTORS FOR GENERAL ELECTRONIC EQUIPMENT, CLASSIFICATION LEVEL G
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    I.S. EN 60115-8:2012 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8: SECTIONAL SPECIFICATION - FIXED SURFACE MOUNT RESISTORS (IEC 60115-8:2009 (MOD))
    I.S. EN 140401:2009 BLANK DETAIL SPECIFICATION: FIXED LOW POWER FILM SURFACE MOUNT (SMD) RESISTORS
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    CEI EN 60068-2-58 : 2016 ENVIRONMENTAL TESTING - PART 2-58: TESTS - TEST TD: TEST METHODS FOR SOLDERABILITY, RESISTANCE TO DISSOLUTION OF METALLIZATION AND TO SOLDERING HEAT OF SURFACE MOUNTING DEVICES (SMD)
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    I.S. EN 60115-2:2015 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 2: SECTIONAL SPECIFICATION: LEADED FIXED LOW POWER FILM RESISTORS
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    EN 60539-1:2016/AC:2017-09 DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 1: GENERIC SPECIFICATION (IEC 60539-1:2016/COR1:2017)
    EN 60115-1:2011/A11:2015 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION
    BS EN 140402-801:2015 Detail specification: Fixed low power wirewound surface mount (SMD) resistors. Rectangular. Stability classes 0,5; 1; 2
    BS EN 62435-5:2017 Electronic components. Long-term storage of electronic semiconductor devices Die and wafer devices
    EN 61811-1:2015 Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
    EN 60862-1:2015 Surface acoustic wave (SAW) filters of assessed quality - Part 1: Generic specification
    EN 62739-1 : 2013 TEST METHOD FOR EROSION OF WAVE SOLDERING EQUIPMENT USING MOLTEN LEAD-FREE SOLDER ALLOY - PART 1: EROSION TEST METHOD FOR METAL MATERIALS WITHOUT SURFACE PROCESSING (IEC 62739-1:2013)
    I.S. EN 60384-26-1:2010 FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT - PART 26-1: BLANK DETAIL SPECIFICATION - FIXED ALUMINUM ELECTROLYTIC CAPACITORS WITH CONDUCTIVE POLYMER SOLID ELECTROLYTE - ASSESSMENT LEVEL EZ
    CEI EN 60115-2 : 2016 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 2: SECTIONAL SPECIFICATION: LEADED FIXED LOW POWER FILM RESISTORS
    CEI EN 60684-2 : 2012 FLEXIBLE INSULATING SLEEVING - PART 2: METHODS OF TEST
    CEI EN 140401 : 2009 BLANK DETAIL SPECIFICATION: FIXED LOW POWER FILM SURFACE MOUNT (SMD) RESISTORS
    CEI EN 60115-8 : 2013 FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8: SECTIONAL SPECIFICATION - FIXED SURFACE MOUNT RESISTORS
    BS EN 61020-1:2009 (published 2013-05) Electromechanical switches for use in electrical and electronic equipment Generic specification
    BS EN 62391-1:2016 Fixed electric double-layer capacitors for use in electric and electronic equipment Generic specification
    BS EN 60068-2-69:2017 ENVIRONMENTAL TESTING - PART 2-69: TESTS - TEST TE/TC: SOLDERABILITY TESTING OF ELECTRONIC COMPONENTS AND PRINTED BOARDS BY THE WETTING BALANCE (FORCE MEASUREMENT) METHOD (IEC 60068-2-69:2017)
    BS EN 62149-4:2010 Fibre optic active components and devices. Performance standards 1300 nm fibre optic transceivers for Gigabit Ethernet application
    BS EN 60127-6:2014 MINIATURE FUSES - PART 6: FUSE-HOLDERS FOR MINIATURE FUSE-LINKS
    CEI EN 60068-2-69 : 2008 ENVIRONMENTAL TESTING - PART 2-69: TESTS - TEST TE/TC: SOLDERABILITY TESTING OF ELECTRONIC COMPONENTS AND PRINTED BOARDS BY THE WETTING BALANCE (FORCE MEASUREMENT) METHOD
    CEI EN 60539-1 : 2009 DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 1: GENERIC SPECIFICATION
    I.S. EN 60384-26:2010 FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT - PART 26: SECTIONAL SPECIFICATION - FIXED ALUMINIUM ELECTROLYTIC CAPACITORS WITH CONDUCTIVE POLYMER SOLID ELECTROLYTE
    I.S. EN 61881-2:2012 RAILWAY APPLICATIONS - ROLLING STOCK EQUIPMENT - CAPACITORS FOR POWER ELECTRONICS - PART 2: ALUMINIUM ELECTROLYTIC CAPACITORS WITH NON SOLID ELECTROLYTE (IEC 61881-2:2012 (EQV))
    I.S. EN IEC 61076-3-119:2018 CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT - PRODUCT REQUIREMENTS - PART 3-119: RECTANGULAR CONNECTORS - DETAIL SPECIFICATION FOR SHIELDED AND UNSHIELDED, FREE AND FIXED 10-WAY CONNECTORS WITH PUSH-PULL COUPLING FOR INDUSTRIAL ENVIRONMENTS FOR DATA TRANSMISSION WITH FREQUENCIES UP TO 100 MHZ
    I.S. EN 60127-4:2005 MINIATURE FUSES - PART 4: UNIVERSAL MODULAR FUSE-LINKS (UMF) - THROUGH-HOLE AND SURFACE MOUNT TYPES (IEC 60127-4:2005 (EQV))
    I.S. EN 60749-20:2009 SEMICONDUCTOR DEVICES - MECHANICAL AND CLIMATIC TEST METHODS - PART 20: RESISTANCE OF PLASTIC ENCAPSULATED SMDS TO THE COMBINED EFFECT OF MOISTURE AND SOLDERING HEAT
    I.S. EN 60862-1:2015 SURFACE ACOUSTIC WAVE (SAW) FILTERS OF ASSESSED QUALITY - PART 1: GENERIC SPECIFICATION
    I.S. EN 62149-9:2014 FIBRE OPTIC ACTIVE COMPONENTS AND DEVICES - PERFORMANCE STANDARDS - PART 9: SEEDED REFLECTIVE SEMICONDUCTOR OPTICAL AMPLIFIER TRANSCEIVERS
    I.S. EN 61881-3:2012 RAILWAY APPLICATIONS - ROLLING STOCK EQUIPMENT - CAPACITORS FOR POWER ELECTRONICS - PART 3: ELECTRIC DOUBLE-LAYER CAPACITORS (IEC 61881-3:2012 (EQV))
    I.S. EN 61811-1:2015 ELECTROMECHANICAL TELECOM ELEMENTARY RELAYS OF ASSESSED QUALITY - PART 1: GENERIC SPECIFICATION AND BLANK DETAIL SPECIFICATION
    CEI EN 60939-1 : 2011 PASSIVE FILTER UNITS FOR ELECTROMAGNETIC INTERFERENCE SUPPRESSION - PART 1: GENERIC SPECIFICATION
    CEI EN 61760-3 : 2010 SURFACE MOUNTING TECHNOLOGY - PART 3: STANDARD METHOD FOR THE SPECIFICATION OF COMPONENTS FOR THROUGH HOLE REFLOW (THR) SOLDERING
    I.S. EN 60068-2-58:2015 ENVIRONMENTAL TESTING - PART 2-58: TESTS - TEST TD: TEST METHODS FOR SOLDERABILITY, RESISTANCE TO DISSOLUTION OF METALLIZATION AND TO SOLDERING HEAT OF SURFACE MOUNTING DEVICES (SMD)
    EN 140401-803 : 2007 AMD 3 2017 DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - CYLINDRICAL - STABILITY CLASSES 0,05; 0,1; 0,25; 0,5; 1; 2
    EN 61747-10-1:2013 Liquid crystal display devices - Part 10-1: Environmental, endurance and mechanical test methods – Mechanical
    EN 62739-3:2017 Test method for erosion of wave soldering equipment using molten lead-free solder alloy - Part 3: Selection guidance of erosion test methods
    EN 62149-4:2010 Fibre optic active components and devices - Performance standards - Part 4: 1 300 nm fibre optic transceivers for Gigabit Ethernet application
    EN 61643-311:2013 Components for low-voltage surge protective devices - Part 311: Performance requirements and test circuits for gas discharge tubes (GDT)
    EN 60115-8:2012 Fixed resistors for use in electronic equipment - Part 8: Sectional specification - Fixed surface mount resistors
    EN 60127-2:2014 Miniature fuses - Part 2: Cartridge fuse-links
    EN 62246-1-1:2013 Reed switches - Part 1-1: Generic specification - Quality assessment
    EN 60252-2 : 2011 AMD 1 2013 AC MOTOR CAPACITORS - PART 2: MOTOR START CAPACITORS (IEC 60252-2:2010/A1:2013)
    EN 60068-2-83 : 2011 ENVIRONMENTAL TESTING - PART 2-83: TESTS - TEST TF: SOLDERABILITY TESTING OF ELECTRONIC COMPONENTS FOR SURFACE MOUNTING DEVICES (SMD) BY THE WETTING BALANCE METHOD USING SOLDER PASTE (IEC 60068-2-83:2011)
    EN 61881-3:2012/A1:2013 RAILWAY APPLICATIONS - ROLLING STOCK EQUIPMENT - CAPACITORS FOR POWER ELECTRONICS - PART 3: ELECTRIC DOUBLE-LAYER CAPACITORS (IEC 61881-3:2012/A1:2013)
    EN 60115-8-1:2015 Fixed resistors for use in electronic equipment - Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film resistors for general electronic equipment, classification level G
    EN 60068-2-58:2015/A1:2018 ENVIRONMENTAL TESTING - PART 2-58: TESTS - TEST TD: TEST METHODS FOR SOLDERABILITY, RESISTANCE TO DISSOLUTION OF METALLIZATION AND TO SOLDERING HEAT OF SURFACE MOUNTING DEVICES (SMD) (IEC 60068-2-58:2015/A1:2017)
    EN 62391-1:2016/AC:2016-12 FIXED ELECTRIC DOUBLE-LAYER CAPACITORS FOR USE IN ELECTRIC AND ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION (IEC 62391-1:2015/COR1:2016)
    EN 60127-6:2014 Miniature fuses - Part 6: Fuse-holders for miniature fuse-links
    EN 60947-7-4 : 2013 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 7-4: ANCILLARY EQUIPMENT - PCB TERMINAL BLOCKS FOR COPPER CONDUCTORS (IEC 60947-7-4:2013)
    EN 62149-9:2014 Fibre optic active components and devices - Performance standards - Part 9: Seeded reflective semiconductor optical amplifier transceivers
    EN 60384-26 : 2010 FIXED CAPACITORS FOR USE IN ELECTRONIC EQUIPMENT - PART 26: SECTIONAL SPECIFICATION - FIXED ALUMINIUM ELECTROLYTIC CAPACITORS WITH CONDUCTIVE POLYMER SOLID ELECTROLYTE
    EN 61020-1:2009 Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification
    EN 61643-312 : 2013 COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - PART 312: SELECTION AND APPLICATION PRINCIPLES FOR GAS DISCHARGE TUBES (IEC 61643-312:2013 + CORRIGENDUM JUL. 2013)

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60068-1:2013 Environmental testing - Part 1: General and guidance
    IEC 60068-2-58:2015+AMD1:2017 CSV Environmental testing - Part 2-58: Tests - Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD)
    EN 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
    EN 60068-1:2014 Environmental testing - Part 1: General and guidance
    IEC 60068-2-66:1994 Environmental testing - Part 2: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour)
    EN 61191-3:2017 Printed board assemblies - Part 3: Sectional specification - Requirements for through-hole mount soldered assemblies
    IEC 60068-2-54:2006 Environmental testing - Part 2-54: Tests - Test Ta: Solderability testing of electronic components by the wetting balance method
    IEC 60068-2-2:2007 Environmental testing - Part 2-2: Tests - Test B: Dry heat
    IEC 60194:2015 Printed board design, manufacture and assembly - Terms and definitions
    EN 60068-2-78:2013 Environmental testing - Part 2-78: Tests - Test Cab: Damp heat, steady state
    IEC 61191-4:2017 Printed board assemblies - Part 4: Sectional specification - Requirements for terminal soldered assemblies
    EN 60068-2-66:1994 Environmental testing - Part 2-66: Test methods - Test Cx: Damp heat, steady state (unsaturated pressurized vapour)
    EN 60068-2-54:2006 Environmental testing - Part 2-54: Tests - Test Ta: Solderability testing of electronic components by the wetting balance method
    EN 61190-1-3:2007/A1:2010 ATTACHMENT MATERIALS FOR ELECTRONIC ASSEMBLY - PART 1-3: REQUIREMENTS FOR ELECTRONIC GRADE SOLDER ALLOYS AND FLUXED AND NON-FLUXED SOLID SOLDER FOR ELECTRONIC SOLDERING APPLICATIONS
    IEC 60068-2-69:2017 Environmental testing - Part 2-69: Tests - Test Te/Tc: Solderability testing of electronic components and printed boards by the wetting balance (force measurement) method
    EN 60194:2006 Printed board design, manufacture and assembly - Terms and definitions
    IEC 61190-1-3:2007+AMD1:2010 CSV Attachment materials for electronic assembly - Part 1-3: Requirements for electronic grade solder alloys and fluxed and non-fluxed solid solders for electronic soldering applications
    EN 61191-4:2017 Printed board assemblies - Part 4: Sectional specification - Requirements for terminal soldered assemblies
    IEC 61191-3:2017 Printed board assemblies - Part 3: Sectional specification - Requirements for through-hole mount soldered assemblies
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